Hello. I have some trouble with the brightness controls on my netbook (hardware and software details below):

Fn+F5/F6 seems to use acpi_video0. Fn keys make the brightness change, and the notification popup appear, but don't move the bar in the popup nor the slider in the Power Manager plugin.

Xfce Power Manager v 1.6.1 seems to use intel_backlight when I use the slider or scroll over the panel icon. This way I can get higher max brightness compared to using the Fn keys.

I'd like to use intel_backlight, as it has a bigger max value and is more fine grained (off-topic, anyone knows about the logarithmic scale proposed here, sounded great!), and marginally would like the slider and notification popup update their position properly.